Point-based construction (Water Overlay)
Point based constructions are constructions for which their geometry is interpreted as a single point.
Examples of point based constructions are the following hydraulic structures:
|Inlet||Conditional flow from external area to inlet location.|
|Sewer overflow||Conditional flow from sewer to waterway, based on sewer overflow height.|
A method to obtain a point from a geometry is to calculate the geometric center point of a geometry. The method used by Tygron Platform is similar to . See the following examples:
The method above is simple, but not robust in all cases. See the following two cases:
In case one, the construction's geometry is a complex polygon. Its centroid lies outside its geometry.
In case two, the construction's geometry is a multi-polygon. Its centroid is in between the two rectangle polygons.
Generally, these kind of polygons are undesirable for a point-based construction.
- The point-based constructions should be supplied as simple rectangle or circular polygons.
- The geometry should consist of only one polygon. In the case of constructions, use only one section.